You can publish your book as a paperback and as an ebook. At Salt River, we work with the Amazon KDP program. You can choose the retail price for your ebook and whether to join the KDP Select program.
PRICING YOUR EBOOK
Here is a helpful article on the pros & cons of pricing your ebook on the low or high end of the spectrum. Amazon provides a graph, showing the sales of books “similar to yours”. Generally, for a 200-page book, retailing it at $2.99 with 70% royalty sells the most copies. But if your book is for a niche market, you should be able to ask more and sell just as many copies.
KDP SELECT Program
Here is an article that discusses the pros & cons of giving Amazon exclusive rights (KDP Select) for 90-day periods.
KDP MATCH BOOK Program
The MatchBook program allows customers who have bought your book in paperback to get the Kindle version for $2.99, $1.99 or $0.99 (your choice).